DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| This Little Professor
(1976 Version B) was manufactured
in December 1976 by Texas Instruments in Lubbock, TX (Date code LTA 5076 »week 50 year 1976).
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The Little Professor is powered
by a 9V battery. |
| The Little
Professor with
the front part of its housing removed, showing an unusual piece of paper inserted below the keyboard.  |
| The printed circuit board
(PCB) of the Little Professor (1976 Version B) is centered around a TMS0975NL/ZA0356 BP single-chip calculator circuit hiding below a smaller PCB with a 150 kHz Clock Oscillator.
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| Close-up view of
a
TMS0975NL/ZA0356 BP packaged in a 28-pin DIP (Dual In-line Package).  |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, November 11, 2023. No reprints without written permission.
